On the Impacts to the Loca l Climate Change of Urban Area due to the Vegetation Canopy

녹지대 분포가 도시 지역의 소기후에 미치는 영향

  • 진병화 (부산광역시동래교육청) ;
  • 변희룡 (부경대학교 대기과학과)
  • Published : 2000.04.01

Abstract

Through numerical experiment using simplified OSU-1D PBL(Oregon State University One-Dimensional Planetary Boundary Layer) model and field measurement, we studied the impacts of vegetation canopy on heat island that was one of the characteristics of local climaate in urban area. it was found that if the fraction of vegetation was extended by 10 percent, the maximum air temperature and the maximum ground temperature can come down about 0.9${\circ}C$, 2.3${\circ}C$, respectively. Even though the field measurement was done under a little unstable atmospheric condition, the canopy air temperature was lower in the daytime, and higher at night than the air and ground temperature. This result suggests that the extention of vegetation canopy can bring about more pleasant local climate by causing the oasis, the shade and the blanket effect.

Keywords

local climate;oasis effect;shade effect;blanket effect;heat island

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